PayPal Digital Gifts is selling Southwest gift cards on eBay that can get you a decent discount. You will pay $135 for a $150 gift card, which gives you a discount of 10%. Keep in mind that you’re no longer learn 5X on these purchases so use any credit card they will give you the most rewards.
Buy Here (my affiliate link)
Purchases are limited to 5 per buyer
Not a profitable deal for resale but could be useful for personal use.